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Finding the Fourth Proportional to 6,977.55, 9,785.85 and 6,977.55

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Solution

The fourth proportional to 6,977.55, 9,785.85 and 6,977.55 is: 9,785.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,977.55 : 9,785.85 = 6,977.55 : x
  2. Step 2: Convert to fraction form
    6,977.55/9,785.85 = 6,977.55/x
  3. Step 3: Cross multiply
    6,977.55x = 9,785.85 × 6,977.55
  4. Step 4: Simplify right side
    6,977.55x = 68,281,257.67
  5. Step 5: Solve for x
    x = 68,281,257.67/6,977.55
  6. Step 6: Final answer
    x = 9,785.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.